{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53757",
    "entityType": "User",
    "nonce": "0x9b149024e459a2455eaaf758f4cab175986b5d2a479eae9d2b993d22f249b6b0",
    "signature": "0x78ebe05d59c43b455413afe7ad6c0e362f8b940361390803758fde1d42286d8e7c4ae0f1fdddf2e38fd8c0dcc784cebbacc5720f09df6d9f34ad46488d1763cf1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}